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-rw-r--r--src/vppinfra/format.h3
-rw-r--r--src/vppinfra/std-formats.c31
2 files changed, 34 insertions, 0 deletions
diff --git a/src/vppinfra/format.h b/src/vppinfra/format.h
index b70384c0e41..d143ecdb6e9 100644
--- a/src/vppinfra/format.h
+++ b/src/vppinfra/format.h
@@ -305,6 +305,9 @@ u8 *format_c_identifier (u8 * s, va_list * va);
/* Format hexdump with both hex and printable chars - compatible with text2pcap */
u8 *format_hexdump (u8 * s, va_list * va);
+/* Format bitmap of array of u64 numbers */
+u8 *format_u64_bitmap (u8 *s, va_list *va);
+
/* Unix specific formats. */
#ifdef CLIB_UNIX
/* Setup input from Unix file. */
diff --git a/src/vppinfra/std-formats.c b/src/vppinfra/std-formats.c
index 1a150ead7bd..421cb3dda99 100644
--- a/src/vppinfra/std-formats.c
+++ b/src/vppinfra/std-formats.c
@@ -411,6 +411,37 @@ format_hexdump (u8 * s, va_list * args)
return s;
}
+__clib_export u8 *
+format_u64_bitmap (u8 *s, va_list *args)
+{
+ u64 *bitmap = va_arg (*args, u64 *);
+ int n_uword = va_arg (*args, int);
+ u32 indent = format_get_indent (s);
+
+ s = format (s, "%6s", "");
+
+ for (int i = 60; i >= 0; i -= 4)
+ s = format (s, "%5d", i);
+
+ vec_add1 (s, '\n');
+
+ for (int j = n_uword - 1; j >= 0; j--)
+ {
+ s = format (s, "%U0x%04x ", format_white_space, indent, j * 8);
+ for (int i = 63; i >= 0; i--)
+ {
+ vec_add1 (s, (1ULL << i) & bitmap[j] ? '1' : '.');
+ if (i % 4 == 0)
+ vec_add1 (s, ' ');
+ }
+ s = format (s, "0x%016lx", bitmap[j]);
+ if (j)
+ vec_add1 (s, '\n');
+ }
+
+ return s;
+}
+
/*
* fd.io coding-style-patch-verification: ON
*